Geochemistry of large benthic foraminifera Amphisorus hemprichii as a high-resolution proxy for lead pollution in coastal environments
| Autor: | Malcolm T. McCulloch, Netramani Sagar, Navid R. Moheimani, Talia Jenner, Peter Scott, Aleksey Sadekov, Ashiwin Vadiveloo |
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| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
Geologic Sediments Biogeochemical cycle biology 010604 marine biology & hydrobiology Pb pollution Lead pollution Foraminifera 010501 environmental sciences Aquatic Science Contamination Oceanography biology.organism_classification 01 natural sciences Pollution Lead Benthic zone Environmental chemistry Environmental science Seawater Amphisorus hemprichii Water Pollutants Chemical Environmental Monitoring 0105 earth and related environmental sciences |
| Zdroj: | Marine Pollution Bulletin. 162:111918 |
| ISSN: | 0025-326X |
| DOI: | 10.1016/j.marpolbul.2020.111918 |
| Popis: | Anthropogenic lead (Pb) contamination resulting from the rapid growth of industrialization in coastal environments poses significant challenges. In this study, we report a novel approach utilising the large benthic foraminifera Amphisorus hemprichii as a biogeochemical archive for monitoring Pb pollution in tropical to warm-temperate coastal waters. Live juvenile specimens of A. hemprichii were cultured in the laboratory for 16 weeks with a range of seawater Pb concentrations. Lead uptake in both newly grown and pre-existing chambers of individual specimens was characterised using the microanalytical technique, Laser ablation-ICP mass spectrometry. We found that Pb concentration in the tests of cultured foraminifera in the laboratory is proportional to seawater [Pb] with the lead partition coefficient (KDPb) of 8.37 ± 0.3. This calibration together with a new biomineralisation model now enables A. hemprichii to be utilised as a naturally occurring bio-archive to quantitatively monitor anthropogenic Pb pollution in coastal waters. |
| Databáze: | OpenAIRE |
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